我有两个坐标在Lat Long格式.
如何从A点(例如纽约37.149472,-95.509544)确定以B为单位的方向(例如Toronto 40.714269,-74.005973)
我正在寻找一个值,如“340度”
在C#
解决方法
如果你想要一贯的轴承跟随你不想要最短的(大圆)路径,你想要一条Rhumb线
转换可移动类型脚本
static double DegreeBearing(
double lat1,double lon1,double lat2,double lon2)
{
var dLon = ToRad(lon2-lon1);
var dPhi = Math.Log(
Math.Tan(ToRad(lat2)/2+Math.PI/4)/Math.Tan(ToRad(lat1)/2+Math.PI/4));
if (Math.Abs(dLon) > Math.PI)
dLon = dLon > 0 ? -(2*Math.PI-dLon) : (2*Math.PI+dLon);
return ToBearing(Math.atan2(dLon,dPhi));
}
public static double ToRad(double degrees)
{
return degrees * (Math.PI / 180);
}
public static double ToDegrees(double radians)
{
return radians * 180 / Math.PI;
}
public static double ToBearing(double radians)
{
// convert radians to degrees (as bearing: 0...360)
return (ToDegrees(radians) +360) % 360;
}
// verify against the website example
DegreeBearing(50.36389,-4.15694,42.35111,-71.04083);
